Harold Into Chaos

Harold was the King of the Imps. He had long admired humanity and sought to live among them. One hundred years ago, he gave up his Imphood to become human.
However when his new home was attacked by magic, he was forced to return to his former nature and aid the kingdom of Mansfield.
Now a century later he faces a new peril - someone mysterious, unknown and immensely powerful is causing all the magical kingdoms on earth to disappear, one by one.
As the hammer approaches, will it fall on Harold as well?